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0. S. WALKER. GRINDING MACHINE.

No. 481,380. Patented Aug. 23, 1892.

UNITED; STATES PATENT OFFICE UAhLIIY h'. WALhtdll, til" GRINDING-MACHINE.

EPECIFICATION forming part of Letters Patent No. 481,380, dated August 23, 1892.

Athiiration filrd Jun 4, i391- lie it. known that l, (Hum-1r S. \\'.\t.|;t:n, a citizen of the l'niled States, residing at \Vm'vester. in the rounl ot' Wort'este' and State of .lnssatitusetts, have invented a new and useful trindine- .idt'iiilltj, of \Yilitil the following is n speeitimtiou.

My inu-ntion relates m re especially to itltji-glilttiillfl machines ol" that class known as universal tool-grinders? and the object is to produee a marhino especially adapted fora larg variety of grinding operations with rapid ehanges l'rom one kind of work to anot ler.

various tlt'i'tltlg'tiinotlts of tool holding supports, 1ntrrelntneteahlo grunting-wheel coliets,

and other novel mechanism here nafter more for-tho work in hand.

As it is found impraetieahle to emp'loy a multiple-spindle grindingqnaehine with all the required shapes, sizes, and grades of grinding-wheels ready mounted for instant use, a single-spindle griruling-machine adapted fot' rapid changes of tll1t,l' \'-\\'i|t?(iS and tool-grimiing :ttaehme nts is demanded. it is also noeossary in changing: the \arious grindingovheels to and from the grindingspindle that the may not. onlyhe ehanged uirklggimt that theyshould also rnntrue and he in lutlanem 'lhese and other desirahle features in a grinding-maehiue not being hitherto satisl'artorily attained, the ohjeet ol' the invention, l'ullyshown and d serihed lurtheron. will he set forth.

Referring toth drawings, Figure l is a part elevation and part section through tin-renter oi themachinasltowing the detachablegrindiug wheel case, one ol the iuterehangealdo Smialhintt i053. iit modni."

\vheelwollets. and the swinging tool-holding supports and their adjusting mechanism. Fig. L is an elevation of the upper portion of the machine with the column hroken away and shows two diit'erent tt'lol-griuding' attachments mounted on the snpportsmue ol. which is swung around outof the way while the other is in use Fig. 3 is a view of Fig.2,lmt at right angles to the same. Fig.4 is an elel \zttion ol' the upper portion of the machine 1 HM). 'lo this end my invention consists oi the 5 similar to Fig.

except that the positions of the toohg'rinding attaehnn-nts are reversed M a dilterent attaehment being: shown in Fig. i is a view of Fig. l, lull. at right angles to the same. l-ifr. ii is an l vationot the top part of the machine similar to liig. 4, hut shows a rwuneugrrindine atlaelnnent in place and the supportinetool holder swung into a new position; Fig. T is an enlarged section at one ol' the intereluuigeahle eollets and one end of the grindin pwheel spindle, a portion heing hroken way.

hnmtarteltersretertosimitarpartsthroughout. the several views.

5,! is the main supporting-eolt1mn of the machine, upon wnieh is mounted the swinging. tool-holding support the swivel elamp-c0llarj, and the cap-piece whieh supports the grindinpspimlle o and the upper meehanism ol' the matrhiue. 'lhe tool-holding support has a vertical adjustment upon the column by means oi the milled screw lathe threaded portion o! which works in the angular nut i and raises the tool-holdiue support by working; in eontaet with the under side of thesame. When lheretptirod position isohtained,clampin; ;'-srrew is tightened and the support grip edlirndytotheeolnnm. \Vhenthescrews h and are Siilt'ktti olT, the tool-holder dest-ends hy its own gravity. One arm of the angular nut i is tgvlimlrienl in shape and is made to \iltit in the screws bored in the hub of the tool-holding support 5/ parallel to the line ol its vertical adjustmont. The bottom part of the said out is held in a recess in the to oi tiltt'iatIlt|)-t't|liztl /,\\'ltit1itlltflPbtiClkttllPCtl in anypositiou hymeans ot the screw shown, one side ot the collar being cut apart.

It isohvious thatthc aforesaid angular nut performs the functions of a dowel or feather key, keeping the clamp'eollar and the toolholding support from swinging about the column except in unison, but at the same time ICC all wing than; to :ippronoh or rooode from our]! ther longitudinally, the bottom of the :llijJItllitt nut hring impt in contact in thonf l'von-ntionod ltt'tss' h r the gravity of the toolhohling support. Also \vhon the rollnr j is riunipod rigidly to tho lltlillll tho tool holdin: support {j nun lw \vrticnlly :ttijtlSlOti; hut any ionduney to HHH't' in a horizontal dirnction is pro'rvuh-ii by the aforesaid nut roirssod int holh c :nnp-i-ollurnnd tool-holding support. This is an important feature when it is do irod to vary tho vertical udjnstniont luii'iu u .:rindin; oporution \vhon tho slightn t horizontal swinging movoniont would disiurh tho rontuLt ol' the grimling-whool with tho \\t)l'l\ living oprrntod upon-us, for instnnw, in tho oporniini shown in Fig.

r: is the spindlwdrivin; puiloy, and r" Ullt of tho grinding-innls. h is ono of tho interrhnngunhlu outlets: and ini'iudi-s tho Stl'OW' threaded wdshnr l'or lmlding' tho grindingi i on tho spiinllv wheel in pluog unit the i-vntrnlly-tnsti-nod holding-sown eh hold in [)lJlL't) in tho vollot h 4 pin 1V 'lho rotlot h is providnd with :in int(*rnnlly-tapt-rod ruvoss to lit the lilptl't'tl and oi the urindingwrhwol spindlo 4/, Wlllt'll in turn is provided with an intornnlIy-thrmdod mqntrnl rw'oss o for tho rncopiion ol'thi-st'row o", uhich hoidstliovoiiot in plum: when mountiiilt'll roliot living nindo prvoisL-ly illlhl, thvy nrc thus intort'hzingouhlo on the spindlr and are sure to run tl'uo (-nch tinn'. A grintIing-uhoul hringonconionntvd upon one of tho colh-ts may ltlllttill until uorn out and ho ropontodlyiidjnstod up n the" pindh) :ind rennin-d thiroirorn h) n rotutory niovuinrnt of tho hnnd of the operator, who grasps tinp -riplnrv of tho grinding" 'liiil with our hiindwhr-nntrostnnd hyrotn- HUHSti WSIi onoroll'ntplonsuro. 'llmfriotion on tho poriplnny of tho whorl in grindiin, wnrls t sore-w the toilet IIlUlt' lli'li1l in phiur. '5 hiss is inndo pos ible it rapid uhungo ol' grnnling-nln-vi nnd iinprovod rosultsnrooh hunt-it r'roprosunts unothor tool-hohlin; support, nrrnngod to swing iihouL tho proji'uting spin lllQ-lmX on tho (illl-Itliftff I. It will ho not im-d that tho toul holtling support j swings in n horizontul plnno, whihtool-holding supportf swings in n \ortioui piano. By this arrangeiuont UH] tool-grinding uttnohmonts can ho adjusted in plnuu on tho nnurhinoutthosauno time, as in Figs. 3, .i, i, ii, and t3, ono nttnohniont being swung around out of tho Wit) while tho other is hiring list-d, thusoil'ecting IL saving in tho illlit of removing, or adjusting tho sumo.

Tho tool-grinding :ntnchniont U is an open V'shapmt holder, and isiivsigncd [oi-squaring tho endsoi' punt-hrs, tnp :ind rmunurs, or any similar work.

in Figs. 2, I i, and 5 urn shown nsliilo :ind \isu mounted upon tho lool-holdin: support 5], tho Vista I hohliin, :i piwro oi work 1; in position for-grinding ihotopsnrhu-o ol' lhr mum.

in Fig. is: shown nnuttzudummttorgrindlug ilutod rmunrrs, oiw oi uhiuh is represontoll hold l ti\\'(!(ll i'i-nturs lrv tho sliding hs-nds o o in i ig. i, n isthodo!:n-hnhh:grinding-whorl rust? h ld in lililtft' n tho rohnnn 3/ by tho st-rvus t, 3 living liossoson tho ('ollliflli The udvnntngns. of tho 'h-turlnihhgrindingwhvol 'n o ii iii: in tho fur-t thnt ii ('ilil ho utliltflltr l to tho mnrhino n1 ph-nsuro or it may he plan-(d upon lllilt'li or in :nrx oiln-r oon Ytiiitiii plow.

In tho \-'ll(('l-(;i t' n :tizshown at vnrioty of shupos ot' griudingovhovls,i-ach of which is intvndr-d to ho provith-d withan interchange- .ihlo t'ullt'l. 'lo avoid confusion in the drawingsi tho Iilt'l are not shown :ittnched to tho \rluwis in this misc.

It will ho soon by the foregoing that tho sysiuni of winning tool -holding supports shown :n'wunplishvs tho improved resultof ennhling any two tool-holding, attachments most in tltlllillitl to ho mounted upon the machine siinuhzuioously :ind alternately brought into position in :i rnpid nmnnor or much quicker than they could in IPHIlH'L'll from tho nmchino nnd roplnvod.

Having now dosorihed my invention, whut Iclnim us now, and desire tosei-nru by Letters lutont, is-

l. In n g'rinding-muL-hino,n snituihlu grinding-whool :irhor, :i supportin x-column, :1 toolholdin support :rrrnnuwl toswiinrnhout snid column and to he vortinully ud iustod thorn n und vlinnpod :it any point of its :idjustlnvnt, coinhinvd with :r rhnnpinp(:ollnr inounti-d on tho said L'Hllllllil fl ljdltllii, to tho tool-holding support, and no nng'ulnr nut littod to rei-i-ssi-s in hoth tool-holdingsupport and clampingrolhir to provi-nt :i swinging movement oi cit hrr oxt-i'pL in unison with the other, but :illowinuusvpnmto YLllitill :ul instnn-utol tho tool-holding support, suhstnntinlly as shown and i'ivsurihvd.

L. In :i grindingnnu-hino, tho comhinution ol' illlt'l'i'llttllg'mllll grindingwheel collots and n. srindin gwvhuol :u'lmr spituhly arranged and monntod in journal hoxos, with a vorti- ('illl}' S\\'iHf {ili; tool-holding support swingin uround and upon onooi. tho jonrmil-hoxos and :irrzuigod to bo lixodly clumped at any point for tho purpose sot forth.

:3. Thu combination of :1 suitnblo supportingmohunn and n grinding wheel arbor iuounti-d thereon, with interchangeable grinding-whoul (eollets prov'uiod with intorlmlty-tw purod rm-vssos at ono 0nd and inturimilythreaded rut-o 30s at tho other end for tho rocvption oi" :i (t'llllitl IILSLOIliHghClOW, :is fully sci forth.

' UAKHCY S. WALKER.

W it u ossos:

i t. lAhlN', W. W. tnimson. 

